update changelog, bump chart

AGENTS.md

@@ -9,14 +9,25 @@ Exporter for Rheem EcoNet / Rheemcloud water heaters, built on the
   `appServices` slice (registers `&econet.EconetService{}`) and the
   `serviceConfig.LoadEnv()` call (see Config gotcha below).
 - `pkg/econet/econet.go` — `EconetService` implements `service.AppService`.
-  It **owns the single `*rheemcloud.Client`** and shares it with the gRPC,
-  MCP, and metrics sub-servers. `Init` connects (fail-fast if creds missing);
-  the returned `ShutdownFunc` stops metrics and closes the client.
+  It **owns the single `econetclient.Client`** and shares it with the gRPC,
+  MCP, and metrics sub-servers. `Init` fails fast if creds are missing, then
+  refreshes device state on a ticker **in a background goroutine** (`pollLoop`,
+  interval `pollInterval`) so a slow or unreachable cloud never blocks
+  HTTP/gRPC server startup. The client is stateless REST, so `ShutdownFunc` is
+  effectively a no-op (the poll goroutine stops on ctx cancel).
+- `pkg/econet/econetclient/` — a minimal EcoNet REST client (ClearBlade
+  backend). `client.go` does the 3 REST calls (auth → `getUserDataForApp` →
+  `dynamicAction` usage) and caches a snapshot under an `RWMutex`; `device.go`
+  decodes the `@...` datapoints into a flat `Device` struct (ported from
+  kevinburke/rheemcloud-go, minus MQTT). `Devices()` is empty until the first
+  `Refresh` succeeds — consumers just see an empty list (no nil-guarding).
+  **No MQTT**, so `WiFiSignal` and `Running`/`RunningState` stay zero.
 - `pkg/econet/econetgrpc/` — `EconetService` gRPC impl (`ListDevices`,
   `GetDevice`) + `deviceToProto`. Does **not** own a client; it's injected.
 - `pkg/econet/econetmcp/` — MCP server at `/api/mcp`; the `list_water_heaters`
   tool delegates to the gRPC server.
-- `pkg/econet/econetmetrics/` — OTEL observable gauges + a usage poller.
+- `pkg/econet/econetmetrics/` — OTEL observable gauges (read the client
+  snapshot at scrape time; no poller of its own).
 
 ## Config gotcha (important)
 
@@ -30,19 +41,26 @@ that's all it takes — no extra wiring.
 
 - `costPerKWH` is **US dollars per kWh** (0.18 = 18¢), feeding
   `econet_energy_cost_dollars`.
+- `econetTLSInsecure` (env `ECONET_TLS_INSECURE`) skips TLS certificate
+  verification when connecting to the EcoNet cloud API. It exists because the
+  upstream host (cloudblade) serves a
+  DigiCert Global Root G1 chain, which is no longer trusted by default in
+  current root stores. **Evaluate removing this later** — prefer fixing the
+  trust chain (e.g. bundling the needed intermediate/root CA) over disabling
+  verification outright.
 
 ## Metrics conventions
 
-- Live state is read at scrape time inside a `RegisterCallback` over
-  `client.Devices()` (cheap, in-memory, always current — the rheemcloud client
-  keeps state fresh over MQTT). Usage (`EnergyUsage`/`WaterUsage`) is REST and
-  slow, so a background poller (`usageInterval`) caches it; the usage callback
-  reads the cache.
+- Live state and usage are both read at scrape time inside `RegisterCallback`s
+  over `client.Devices()` (cheap, in-memory). The `pollLoop` in `econet.go`
+  keeps the snapshot fresh over REST (`client.Refresh`), which folds daily
+  energy/water usage totals into each `Device`. No usage cache or event
+  draining — the callbacks just read the current snapshot.
 - **Attributes**: dotted/namespaced `econet.*` (semantic-convention style),
   low-cardinality only (serial, device_id, friendly_name, type, generic_type,
   mode, energy_type). **Never** put changing values (timestamps) in attributes
   — `econet_last_updated_seconds` is a metric *value*, and it's suppressed
-  until the first MQTT update so it never emits a garbage epoch.
+  until the first refresh so it never emits a garbage epoch.
 - **Units live in metric names** (`_fahrenheit`, `_kwh`, `_gallons`,
   `_dollars`), NOT via `metric.WithUnit` — the OTEL→Prometheus exporter would
   otherwise append a second unit suffix (`..._fahrenheit_F`).
@@ -52,9 +70,9 @@ that's all it takes — no extra wiring.
 - Regenerate proto: `make proto` (buf; `PROTO_DIRS=proto/econet/v1alpha1/*`).
 - Regenerate config schema after config changes: `make schema`.
 - Build/test: `go build ./... && go test ./...`.
-- The rheemcloud `*Device` has no exported constructor, so `deviceToProto`
-  isn't unit-testable in isolation; test the pure helpers (`summarizeDevices`,
-  `b2i`) and exercise the rest with a live run.
+- `econetclient.Device` is a plain struct, so `deviceToProto` and the datapoint
+  decoders (`mode`, `enabled`, `setpoint`, `hotWater`) are unit-testable by
+  hand-building a `Device` or feeding raw JSON to `newDevice`.
 
 ## Live verification (needs a real Rheem account)
 

CHANGELOG.md

@@ -1,18 +1,67 @@
-# v0.7.0
-* feat: Add HTTP log exclusion regex paths to configuration schema.
-* chore: Update Go version to 1.25.
-* chore: Update module dependencies.
+# Changelog
 
-# v0.6.0
-*   feat: Introduce Model Context Protocol (MCP) server with a demo random fact tool.
-*   feat: Add MCP server configuration file (`contrib/mcpinspector.json`).
-*   deps: Update Go module dependencies, including `bufbuild/protovalidate`, `go-app`, `grpc-gateway`, `googleapis/api`, `grpc`, `protobuf`, `golang.org/x/exp`, and `googleapis/rpc`.
-*   deps: Add new Go module dependencies: `modelcontextprotocol/go-sdk` and `k8s.io/utils`.
+All notable changes to econet-exporter are documented here. The format is
+based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/), and this
+project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-# v0.5.0
+## [v0.3.0] - 2026-07-05
 
-*   Added OpenTelemetry tracing for application startup.
-*   Updated Go module dependencies, including `protovalidate`, `go-app`, `grpc`, and OpenTelemetry related packages.
-*   Enhanced `Makefile` `rename` target to update the application name constant in `main.go`.
-*   Configured `air` live-reloading to exclude the `proto` directory.
-*   Refactored application initialization logic for improved modularity and OpenTelemetry integration.
+### Changed
+
+* Replaced the third-party `kevinburke/rheemcloud-go` dependency and its MQTT
+  coupling with an in-repo `econetclient` REST poller that talks directly to
+  the Rheem/EcoNet cloud REST API. Device state (including `@RUNNING`, `@MODE`,
+  and `@STATUS`) is sourced from the REST `getUserDataForApp` payload, so no
+  MQTT connection is required.
+
+### Removed
+
+* `rheemcloud` package and its `go.mod`/`go.sum` entries.
+
+## [v0.2.0] - 2026-07-05
+
+### Added
+
+* `econetTLSInsecure` config option (env `ECONET_TLS_INSECURE`) to skip TLS
+  certificate verification when
+  connecting to the Rheem/EcoNet cloud API. The upstream host (cloudblade)
+  serves an old/untrusted certificate chain; this is a stopgap and should be
+  removed once the upstream certificate is fixed. See AGENTS.md.
+* `TODO.md` tracking outstanding work (CA cert bundle, mutating proto RPCs,
+  additional tracing spans).
+
+## [v0.1.2] - 2026-07-04
+
+### Added
+
+* CA certificate bundle baked into the container image so the exporter can
+  establish TLS connections to the EcoNet API.
+
+### Changed
+
+* Bumped Helm chart versions.
+
+## [v0.1.1] - 2026-07-04
+
+### Fixed
+
+* Corrected the Helm chart `appVersion`.
+
+## [v0.1.0] - 2026-07-04
+
+Initial release of the EcoNet exporter for Rheem / Rheemcloud water heaters,
+built on the `go-app` framework.
+
+### Added
+
+* `EconetService` owning a single shared `*rheemcloud.Client` across the gRPC,
+  MCP, and metrics sub-servers (fail-fast on missing credentials).
+* gRPC API (`ListDevices`, `GetDevice`) with proto definitions and
+  grpc-gateway REST bindings.
+* MCP server at `/api/mcp` exposing a `list_water_heaters` tool.
+* OpenTelemetry observable gauges for device state (temperature, mode, energy
+  and water usage, cost) with a background usage poller, exported to
+  Prometheus. Units are encoded in metric names (`_fahrenheit`, `_kwh`,
+  `_gallons`, `_dollars`).
+* `costPerKWH` config (US dollars per kWh) feeding `econet_energy_cost_dollars`.
+* Helm chart for Kubernetes deployment.

Dockerfile

@@ -19,6 +19,8 @@ FROM alpine:latest
 
 ARG APP_NAME=econet-exporter
 
+RUN apk add --no-cache ca-certificates
+
 WORKDIR /app
 USER 100:101
 

README.md

@@ -1,8 +1,7 @@
 # econet-exporter 🔥💧
 
-An exporter for **Rheem EcoNet / Rheemcloud** water-heater data. It keeps a
-long-lived connection to the Rheem cloud (via
-[`rheemcloud-go`](https://github.com/kevinburke/rheemcloud-go)) and exposes device
+An exporter for **Rheem EcoNet / Rheemcloud** water-heater data. It polls the
+Rheem cloud REST API (ClearBlade backend) on an interval and exposes device
 state and usage three ways:
 
 - **OTEL metrics** served for Prometheus scraping at `/metrics` (live state +
@@ -25,7 +24,7 @@ go-app defaults. Custom fields (see `pkg/config/custom.go`):
 | `econetEmail` | `ECONET_EMAIL` | Rheem account email |
 | `econetPassword` | `ECONET_PASSWORD` | Prefer the env var; keep out of config.yaml |
 | `costPerKWH` | `ECONET_COST_PER_KWH` | **US dollars per kWh** (e.g. `0.18` = 18¢), not cents |
-| `usageInterval` | `ECONET_USAGE_INTERVAL` | Energy/water poll interval (default `5m`) |
+| `pollInterval` | `ECONET_POLL_INTERVAL` | How often device state + daily energy/water usage are re-fetched over REST (default `1m`) |
 
 Everything under the go-app `AppConfig` (logging, otel, http, grpc) is also
 env-overridable with `APP_*` variables — see `env-sample`.
@@ -47,20 +46,27 @@ Then:
 
 Per-device gauges labeled `econet.serial`, `econet.device_id`,
 `econet.friendly_name`: `econet_setpoint_fahrenheit`, `econet_connected`,
-`econet_running`, `econet_enabled`, `econet_away`,
-`econet_hot_water_availability_percent`, `econet_alert_count`,
-`econet_wifi_signal_db`, `econet_device_info` (adds `type`/`generic_type`/`mode`).
+`econet_running` (adds a `running_state` label naming the active stage, e.g.
+`compressor-running` / `element-running` / `idle`), `econet_enabled`,
+`econet_away`, `econet_hot_water_availability_percent`, `econet_alert_count`,
+`econet_wifi_signal_db`, `econet_mode` (enum: `1` for the current mode, `0`
+otherwise, via a `mode` label), `econet_device_info` (adds
+`type`/`generic_type`/`mode`).
 Polled usage: `econet_energy_usage_kwh`, `econet_water_usage_gallons`,
 `econet_energy_cost_dollars`.
 
+> Note: `econet_wifi_signal_db` is only delivered over Rheem's MQTT push stream,
+> which this exporter does not use — it stays at `0`.
+
 ## 📂 Project Structure
 - `proto/econet/v1alpha1/` - Protobuf definitions (source).
 - `api/econet/v1alpha1/` - Generated proto, grpc, grpc-gateway code.
 - `pkg/config/` - Custom config merged with go-app configuration.
-- `pkg/econet/` - `EconetService` (owns the rheemcloud client) plus:
+- `pkg/econet/` - `EconetService` (owns the REST client + poll ticker) plus:
+  - `econetclient/` - minimal EcoNet REST client (auth, devices, usage).
   - `econetgrpc/` - gRPC `EconetService` implementation.
   - `econetmcp/` - MCP server + tools.
-  - `econetmetrics/` - OTEL observable gauges + usage poller.
+  - `econetmetrics/` - OTEL observable gauges.
 - `helm/` - Helm chart for Kubernetes deployment.
 - `.gitea/workflows/` - CI pipelines.
 

TODO.md

@@ -1,10 +1,7 @@
-# Demo app TODO
+# econet-exporter TODO
+
+- [ ] Fix Docerfile for ca cert bundle (TLS error to API host)
+- [ ] Add mutating proto RPCs (change mode, etc..)
+- [ ] Add spans to things
+
 
-- [x] Create generic interface for implenting a service
-- [x] Create config sample not called demo, so it is more easily reused
-- [x] Update README for tagging/versioning/pipeline info
-- [x] Update README for detail on installing protoc tools and make
-- [x] Rename project
-- [x] Finish grpc sample implementation
-- [x] Add Dockerfile
-- [x] Add gitea CI

config.yaml

@@ -4,7 +4,7 @@
 # NOTE: Prefer setting econetPassword via the ECONET_PASSWORD env var
 econetEmail: ""
 costPerKWH: 0.0 # US dollars per kWh (e.g. 0.18 = 18 cents), not cents
-usageInterval: 5m
+pollInterval: 1m # how often device state + daily usage are re-fetched over REST
 
 # go-app config
 name: econet-exporter

contrib/schema.json

@@ -124,6 +124,7 @@
   },
   "properties": {
     "costPerKWH": {
+      "default": 0.19,
       "type": "number"
     },
     "econetEmail": {
@@ -132,6 +133,10 @@
     "econetPassword": {
       "type": "string"
     },
+    "econetTLSInsecure": {
+      "default": false,
+      "type": "boolean"
+    },
     "environment": {
       "type": "string"
     },
@@ -150,7 +155,7 @@
     "otel": {
       "$ref": "#/definitions/ConfigOTELConfig"
     },
-    "usageInterval": {
+    "pollInterval": {
       "type": "integer"
     },
     "version": {

go.mod

@@ -6,7 +6,6 @@ require (
 	buf.build/gen/go/bufbuild/protovalidate/protocolbuffers/go v1.36.11-20260415201107-50325440f8f2.1
 	gitea.libretechconsulting.com/rmcguire/go-app v0.17.1
 	github.com/grpc-ecosystem/grpc-gateway/v2 v2.29.0
-	github.com/kevinburke/rheemcloud-go v0.1.1
 	github.com/modelcontextprotocol/go-sdk v1.6.1
 	github.com/rs/zerolog v1.35.1
 	go.opentelemetry.io/otel/metric v1.44.0
@@ -43,14 +42,11 @@ require (
 	github.com/beorn7/perks v1.0.1 // indirect
 	github.com/cenkalti/backoff/v5 v5.0.3 // indirect
 	github.com/cespare/xxhash/v2 v2.3.0 // indirect
-	github.com/eclipse/paho.mqtt.golang v1.5.1 // indirect
 	github.com/go-logr/logr v1.4.3 // indirect
 	github.com/go-logr/stdr v1.2.2 // indirect
 	github.com/google/cel-go v0.29.1 // indirect
 	github.com/google/jsonschema-go v0.4.3 // indirect
 	github.com/google/uuid v1.6.0 // indirect
-	github.com/gorilla/websocket v1.5.3 // indirect
-	github.com/kevinburke/rest v0.0.0-20260604005914-d145d8a0294b // indirect
 	github.com/mattn/go-colorable v0.1.15 // indirect
 	github.com/mattn/go-isatty v0.0.22 // indirect
 	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
@@ -70,7 +66,6 @@ require (
 	golang.org/x/exp v0.0.0-20260611194520-c48552f49976 // indirect
 	golang.org/x/net v0.56.0 // indirect
 	golang.org/x/oauth2 v0.36.0 // indirect
-	golang.org/x/sync v0.21.0 // indirect
 	golang.org/x/sys v0.46.0 // indirect
 	golang.org/x/text v0.38.0 // indirect
 	google.golang.org/genproto/googleapis/rpc v0.0.0-20260630182238-925bb5da69e7 // indirect

go.sum

@@ -24,8 +24,6 @@ github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UF
 github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/eclipse/paho.mqtt.golang v1.5.1 h1:/VSOv3oDLlpqR2Epjn1Q7b2bSTplJIeV2ISgCl2W7nE=
-github.com/eclipse/paho.mqtt.golang v1.5.1/go.mod h1:1/yJCneuyOoCOzKSsOTUc0AJfpsItBGWvYpBLimhArU=
 github.com/felixge/httpsnoop v1.1.0 h1:3YtUj32ZZkqZtt3sZZsClsymw/QDuVfpNhoA31zeORc=
 github.com/felixge/httpsnoop v1.1.0/go.mod h1:Zqxgdd+1Rkcz8euOqdr7lqgCRJztwr5hp9vDSi5UZCE=
 github.com/go-logr/logr v1.2.2/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A=
@@ -45,18 +43,12 @@ github.com/google/jsonschema-go v0.4.3 h1:/DBOLZTfDow7pe2GmaJNhltueGTtDKICi8V8p+
 github.com/google/jsonschema-go v0.4.3/go.mod h1:r5quNTdLOYEz95Ru18zA0ydNbBuYoo9tgaYcxEYhJVE=
 github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
 github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
-github.com/gorilla/websocket v1.5.3 h1:saDtZ6Pbx/0u+bgYQ3q96pZgCzfhKXGPqt7kZ72aNNg=
-github.com/gorilla/websocket v1.5.3/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
 github.com/grpc-ecosystem/go-grpc-middleware/v2 v2.3.3 h1:B+8ClL/kCQkRiU82d9xajRPKYMrB7E0MbtzWVi1K4ns=
 github.com/grpc-ecosystem/go-grpc-middleware/v2 v2.3.3/go.mod h1:NbCUVmiS4foBGBHOYlCT25+YmGpJ32dZPi75pGEUpj4=
 github.com/grpc-ecosystem/grpc-gateway/v2 v2.29.0 h1:5VipnvEpbqr2gA2VbM+nYVbkIF28c5ZQfqCBQ5g2xfk=
 github.com/grpc-ecosystem/grpc-gateway/v2 v2.29.0/go.mod h1:Hyl3n6Twe1hvtd9XUXDec4pTvgMSEixRuQKPTMH2bNs=
 github.com/iancoleman/orderedmap v0.3.0 h1:5cbR2grmZR/DiVt+VJopEhtVs9YGInGIxAoMJn+Ichc=
 github.com/iancoleman/orderedmap v0.3.0/go.mod h1:XuLcCUkdL5owUCQeF2Ue9uuw1EptkJDkXXS7VoV7XGE=
-github.com/kevinburke/rest v0.0.0-20260604005914-d145d8a0294b h1:9ZWwhlz+lmPlXCz37dkRVMgK+iIwkFyQBogC2oWds/A=
-github.com/kevinburke/rest v0.0.0-20260604005914-d145d8a0294b/go.mod h1:x35n2Fa5sM/IwpMDk6B9f7n6FkcBFX3yV9diIRfqxQc=
-github.com/kevinburke/rheemcloud-go v0.1.1 h1:PsrpOso9rEeyATlAfDHjKx5E8C2TJseDwfeRvw4uzH4=
-github.com/kevinburke/rheemcloud-go v0.1.1/go.mod h1:17QQqbT/YPQDnR3m+67EV7Wuve0onhKeiLAMcy1br1U=
 github.com/klauspost/compress v1.18.0 h1:c/Cqfb0r+Yi+JtIEq73FWXVkRonBlf0CRNYc8Zttxdo=
 github.com/klauspost/compress v1.18.0/go.mod h1:2Pp+KzxcywXVXMr50+X0Q/Lsb43OQHYWRCY2AiWywWQ=
 github.com/kr/pretty v0.3.1 h1:flRD4NNwYAUpkphVc1HcthR4KEIFJ65n8Mw5qdRn3LE=
@@ -157,8 +149,6 @@ golang.org/x/net v0.56.0 h1:Rw8j/hFzGvJUZwNBXnAtf5sVDVt+65SK2C7IxCxZt5o=
 golang.org/x/net v0.56.0/go.mod h1:D3Ku6r+V6JROoZK144D2XfMHFcMq/0zSfLelVTCFKec=
 golang.org/x/oauth2 v0.36.0 h1:peZ/1z27fi9hUOFCAZaHyrpWG5lwe0RJEEEeH0ThlIs=
 golang.org/x/oauth2 v0.36.0/go.mod h1:YDBUJMTkDnJS+A4BP4eZBjCqtokkg1hODuPjwiGPO7Q=
-golang.org/x/sync v0.21.0 h1:HLII4xRRTtCRkxYp4HNFF0Js/Og6q2i++KXbg0gHCwM=
-golang.org/x/sync v0.21.0/go.mod h1:9xrNwdLfx4jkKbNva9FpL6vEN7evnE43NNNJQ2LF3+0=
 golang.org/x/sys v0.46.0 h1:noSf2Fq6F8DBgS+LysIkx7rIExoNHJsxOAtPp4rthXw=
 golang.org/x/sys v0.46.0/go.mod h1:4GL1E5IUh+htKOUEOaiffhrAeqysfVGipDYzABqnCmw=
 golang.org/x/text v0.38.0 h1:sXmwo9DwP3OK9EZ7PqAdaooSGozfl/3a6/xJcbzPRhE=

helm/Chart.yaml

@@ -15,13 +15,13 @@ type: application
 # This is the chart version. This version number should be incremented each time you make changes
 # to the chart and its templates, including the app version.
 # Versions are expected to follow Semantic Versioning (https://semver.org/)
-version: 0.1.3
+version: 0.1.6
 
 # This is the version number of the application being deployed. This version number should be
 # incremented each time you make changes to the application. Versions are not expected to
 # follow Semantic Versioning. They should reflect the version the application is using.
 # It is recommended to use it with quotes.
-appVersion: "v0.7.0"
+appVersion: "v0.3.0"
 
 dependencies:
   - name: hull

helm/values.yaml

@@ -7,7 +7,7 @@ hull:
       # NOTE: Prefer supplying econetPassword via the ECONET_PASSWORD env var
       econetEmail: ""
       costPerKWH: 0.19
-      usageInterval: 5m
+      pollInterval: 1m
       # go-app config
       name: econet-exporter
       logging:

pkg/config/custom.go

@@ -12,9 +12,9 @@ import (
 	"gitea.libretechconsulting.com/rmcguire/go-app/pkg/config"
 )
 
-// DefaultUsageInterval is used when UsageInterval is unset. Rheem's
-// energy/water history only updates hourly, so polling faster is wasteful.
-const DefaultUsageInterval = 5 * time.Minute
+// DefaultPollInterval is used when PollInterval is unset. Each tick re-fetches
+// device state and daily energy/water usage over REST.
+const DefaultPollInterval = 1 * time.Minute
 
 type ServiceConfig struct {
 	// Rheem EcoNet cloud credentials. Prefer supplying the password via
@@ -22,13 +22,17 @@ type ServiceConfig struct {
 	EconetEmail    string `yaml:"econetEmail"    json:"econetEmail,omitempty"    env:"ECONET_EMAIL"`
 	EconetPassword string `yaml:"econetPassword" json:"econetPassword,omitempty" env:"ECONET_PASSWORD"`
 
+	// Necessary due to ancient TLS certificate run by cloudblade that isn't trusted in modern ca-certificate bundles
+	EconetTLSInsecure bool `yaml:"econetTLSInsecure" json:"econetTLSInsecure,omitempty" env:"ECONET_TLS_INSECURE" default:"false"`
+
 	// CostPerKWH is the electricity price in US dollars per kWh (e.g. 0.18
 	// means 18 cents/kWh, NOT 18). It derives the econet_energy_cost_dollars
 	// metric from kWh energy usage.
 	CostPerKWH float64 `yaml:"costPerKWH" json:"costPerKWH,omitempty" env:"ECONET_COST_PER_KWH" default:"0.19"`
 
-	// UsageInterval controls how often energy/water usage history is polled.
-	UsageInterval time.Duration `yaml:"usageInterval" json:"usageInterval,omitempty" env:"ECONET_USAGE_INTERVAL"`
+	// PollInterval controls how often device state and daily energy/water
+	// usage are re-fetched over REST.
+	PollInterval time.Duration `yaml:"pollInterval" json:"pollInterval,omitempty" env:"ECONET_POLL_INTERVAL"`
 
 	// Embeds go-app config, used by go-app to
 	// merge custom config into go-app config, and to produce
@@ -47,10 +51,10 @@ func (c *ServiceConfig) LoadEnv() error {
 	return env.Parse(c)
 }
 
-// GetUsageInterval returns the configured usage poll interval or the default.
-func (c *ServiceConfig) GetUsageInterval() time.Duration {
-	if c.UsageInterval <= 0 {
-		return DefaultUsageInterval
+// GetPollInterval returns the configured poll interval or the default.
+func (c *ServiceConfig) GetPollInterval() time.Duration {
+	if c.PollInterval <= 0 {
+		return DefaultPollInterval
 	}
-	return c.UsageInterval
+	return c.PollInterval
 }

pkg/econet/econet.go

@@ -6,14 +6,15 @@ package econet
 import (
 	"context"
 	"fmt"
-	"log/slog"
+	"time"
 
-	rheemcloud "github.com/kevinburke/rheemcloud-go"
+	"github.com/rs/zerolog"
 
 	optsgrpc "gitea.libretechconsulting.com/rmcguire/go-app/pkg/srv/grpc/opts"
 	optshttp "gitea.libretechconsulting.com/rmcguire/go-app/pkg/srv/http/opts"
 
 	"gitea.libretechconsulting.com/rmcguire/econet-exporter/pkg/config"
+	"gitea.libretechconsulting.com/rmcguire/econet-exporter/pkg/econet/econetclient"
 	"gitea.libretechconsulting.com/rmcguire/econet-exporter/pkg/econet/econetgrpc"
 	"gitea.libretechconsulting.com/rmcguire/econet-exporter/pkg/econet/econetmcp"
 	"gitea.libretechconsulting.com/rmcguire/econet-exporter/pkg/econet/econetmetrics"
@@ -23,7 +24,8 @@ import (
 type EconetService struct {
 	ctx     context.Context
 	config  *config.ServiceConfig
-	client  *rheemcloud.Client
+	log     *zerolog.Logger
+	client  *econetclient.Client
 	grpc    *econetgrpc.EconetGRPCServer
 	mcp     *econetmcp.EconetMCPServer
 	metrics *econetmetrics.Collector
@@ -32,39 +34,58 @@ type EconetService struct {
 func (e *EconetService) Init(ctx context.Context, cfg *config.ServiceConfig) (service.ShutdownFunc, error) {
 	e.ctx = ctx
 	e.config = cfg
+	e.log = zerolog.Ctx(ctx)
 
-	client, err := connect(ctx, cfg)
-	if err != nil {
-		return nil, err
+	// Fail fast on missing credentials (cheap, no network).
+	if cfg.EconetEmail == "" || cfg.EconetPassword == "" {
+		return nil, fmt.Errorf("econet: email and password required (set ECONET_EMAIL / ECONET_PASSWORD)")
 	}
-	e.client = client
 
-	e.grpc = econetgrpc.NewEconetGRPCServer(ctx, cfg, client)
+	e.client = econetclient.New(cfg, e.log)
+	e.grpc = econetgrpc.NewEconetGRPCServer(ctx, cfg, e.client)
 	e.mcp = econetmcp.NewEconetMCPServer(ctx, cfg, e.grpc)
-	e.metrics = econetmetrics.NewCollector(ctx, cfg, client)
-	if err := e.metrics.Start(); err != nil {
+	e.metrics = econetmetrics.NewCollector(ctx, cfg, e.client)
+	if err := e.metrics.RegisterGauges(); err != nil {
 		return nil, err
 	}
 
+	// Poll the cloud in the background so a slow or unreachable Rheem cloud
+	// never blocks HTTP/gRPC server startup. Devices are empty until the first
+	// successful refresh; the gauges and gRPC handlers tolerate that.
+	go e.pollLoop(ctx)
+
 	return e.shutdown, nil
 }
 
-func connect(ctx context.Context, cfg *config.ServiceConfig) (*rheemcloud.Client, error) {
-	if cfg.EconetEmail == "" || cfg.EconetPassword == "" {
-		return nil, fmt.Errorf("econet: email and password required (set ECONET_EMAIL / ECONET_PASSWORD)")
+// pollLoop refreshes device state on a ticker for the life of the service.
+// A per-refresh timeout keeps a hung REST call from stalling the loop.
+func (e *EconetService) pollLoop(ctx context.Context) {
+	interval := e.config.GetPollInterval()
+	e.refresh(ctx)
+	t := time.NewTicker(interval)
+	defer t.Stop()
+	for {
+		select {
+		case <-ctx.Done():
+			return
+		case <-t.C:
+			e.refresh(ctx)
+		}
 	}
-	client, err := rheemcloud.Connect(ctx, cfg.EconetEmail, cfg.EconetPassword, &rheemcloud.Config{
-		Logger: slog.Default(),
-	})
-	if err != nil {
-		return nil, fmt.Errorf("econet: connect failed: %w", err)
+}
+
+func (e *EconetService) refresh(ctx context.Context) {
+	rctx, cancel := context.WithTimeout(ctx, e.config.GetPollInterval())
+	defer cancel()
+	if err := e.client.Refresh(rctx); err != nil {
+		e.log.Error().Err(err).Msg("econet: refresh failed")
+		return
 	}
-	return client, nil
+	e.log.Debug().Int("devices", len(e.client.Devices())).Msg("econet: refreshed")
 }
 
 func (e *EconetService) shutdown(_ context.Context) (string, error) {
-	e.metrics.Stop()
-	return "EconetService", e.client.Close()
+	return "EconetService", nil
 }
 
 func (e *EconetService) GetGRPC() *optsgrpc.AppGRPC {
@@ -86,7 +107,7 @@ func (e *EconetService) healthChecks() []optshttp.HealthCheckFunc {
 	return []optshttp.HealthCheckFunc{
 		func(_ context.Context) error {
 			if len(e.client.Devices()) == 0 {
-				return fmt.Errorf("econet: no devices loaded")
+				return fmt.Errorf("econet: no devices loaded yet")
 			}
 			return nil
 		},

pkg/econet/econetclient/client.go

@@ -0,0 +1,324 @@
+// Package econetclient is a minimal REST client for the Rheem EcoNet cloud
+// (ClearBlade backend). It authenticates, lists devices, and reads daily
+// energy/water usage over plain HTTPS — no MQTT. Callers drive it by calling
+// Refresh on a ticker and reading the decoded Device snapshots.
+package econetclient
+
+import (
+	"bytes"
+	"context"
+	"crypto/tls"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/rs/zerolog"
+
+	"gitea.libretechconsulting.com/rmcguire/econet-exporter/pkg/config"
+)
+
+// Static credentials embedded in the Rheem EcoNet Android app; the ClearBlade
+// backend uses them to identify the calling app independent of the per-user
+// auth. Same values pyeconet and kevinburke/rheemcloud-go use.
+const (
+	clearBladeSystemKey    = "e2e699cb0bb0bbb88fc8858cb5a401"
+	clearBladeSystemSecret = "E2E699CB0BE6C6FADDB1B0BC9A20"
+	baseURL                = "https://rheem.clearblade.com/api/v/1"
+)
+
+// Client talks to the EcoNet REST API and caches the latest device snapshot.
+// It is safe for concurrent use: Refresh swaps the device map under a lock,
+// and readers take a read lock.
+type Client struct {
+	email      string
+	password   string
+	costPerKWH float64
+	http       *http.Client
+	log        *zerolog.Logger
+
+	mu        sync.RWMutex
+	token     string
+	accountID string
+	devices   map[string]*Device
+}
+
+// New builds a Client from config. It performs no network I/O; call Refresh
+// to authenticate and populate devices.
+func New(cfg *config.ServiceConfig, log *zerolog.Logger) *Client {
+	transport := http.DefaultTransport.(*http.Transport).Clone()
+	transport.TLSClientConfig = &tls.Config{InsecureSkipVerify: cfg.EconetTLSInsecure} //nolint:gosec // opt-in via EconetTLSInsecure
+	return &Client{
+		email:      cfg.EconetEmail,
+		password:   cfg.EconetPassword,
+		costPerKWH: cfg.CostPerKWH,
+		http:       &http.Client{Transport: transport, Timeout: 15 * time.Second},
+		log:        log,
+		devices:    map[string]*Device{},
+	}
+}
+
+// CostPerKWH exposes the configured electricity price for the usage gauges.
+func (c *Client) CostPerKWH() float64 { return c.costPerKWH }
+
+// Devices returns a snapshot slice of the currently-known devices. Empty until
+// the first successful Refresh.
+func (c *Client) Devices() []*Device {
+	c.mu.RLock()
+	defer c.mu.RUnlock()
+	out := make([]*Device, 0, len(c.devices))
+	for _, d := range c.devices {
+		out = append(out, d)
+	}
+	return out
+}
+
+// Device looks up a single device by serial number, or nil if unknown.
+func (c *Client) Device(serial string) *Device {
+	c.mu.RLock()
+	defer c.mu.RUnlock()
+	return c.devices[serial]
+}
+
+// Refresh authenticates if needed, re-fetches the device list, reads each
+// unit's daily usage, and atomically replaces the cached snapshot. On an auth
+// failure it clears the token so the next call re-authenticates.
+func (c *Client) Refresh(ctx context.Context) error {
+	if err := c.ensureAuth(ctx); err != nil {
+		return err
+	}
+	equipment, err := c.fetchDevices(ctx)
+	if err != nil {
+		c.clearToken() // force re-auth next time in case the token expired
+		return err
+	}
+
+	now := time.Now()
+	devices := make(map[string]*Device, len(equipment))
+	for _, raw := range equipment {
+		d := newDevice(raw, now)
+		if d.SerialNumber == "" {
+			continue
+		}
+		c.fetchUsage(ctx, d)
+		devices[d.SerialNumber] = d
+	}
+
+	c.mu.Lock()
+	c.devices = devices
+	c.mu.Unlock()
+	return nil
+}
+
+func (c *Client) clearToken() {
+	c.mu.Lock()
+	c.token = ""
+	c.mu.Unlock()
+}
+
+func (c *Client) ensureAuth(ctx context.Context) error {
+	c.mu.RLock()
+	have := c.token != ""
+	c.mu.RUnlock()
+	if have {
+		return nil
+	}
+	return c.authenticate(ctx)
+}
+
+// --- REST calls ----------------------------------------------------------
+
+func (c *Client) authenticate(ctx context.Context) error {
+	body := map[string]string{"email": c.email, "password": c.password}
+	var ar struct {
+		UserToken string `json:"user_token"`
+		Options   struct {
+			Success   bool   `json:"success"`
+			AccountID string `json:"account_id"`
+			Message   string `json:"message"`
+		} `json:"options"`
+	}
+	if err := c.do(ctx, "/user/auth", "", body, &ar); err != nil {
+		return fmt.Errorf("econet: auth: %w", err)
+	}
+	if !ar.Options.Success || ar.UserToken == "" || ar.Options.AccountID == "" {
+		if ar.Options.Message != "" {
+			return fmt.Errorf("econet: auth rejected: %s", ar.Options.Message)
+		}
+		return fmt.Errorf("econet: auth rejected (empty token/account)")
+	}
+	c.mu.Lock()
+	c.token = ar.UserToken
+	c.accountID = ar.Options.AccountID
+	c.mu.Unlock()
+	return nil
+}
+
+// fetchDevices returns the raw equipment blocks from getUserDataForApp.
+func (c *Client) fetchDevices(ctx context.Context) ([]map[string]json.RawMessage, error) {
+	var resp struct {
+		Results struct {
+			Locations []struct {
+				// "equiptments" is misspelled upstream; match it exactly.
+				Equipments []map[string]json.RawMessage `json:"equiptments"`
+			} `json:"locations"`
+		} `json:"results"`
+	}
+	path := "/code/" + clearBladeSystemKey + "/getUserDataForApp"
+	if err := c.do(ctx, path, c.userToken(), map[string]string{"resource": "friedrich"}, &resp); err != nil {
+		return nil, fmt.Errorf("econet: device list: %w", err)
+	}
+	var out []map[string]json.RawMessage
+	for _, loc := range resp.Results.Locations {
+		out = append(out, loc.Equipments...)
+	}
+	return out, nil
+}
+
+// fetchUsage reads the device's daily energy and water totals, filling the
+// usage fields. Failures are logged at debug and leave the fields at zero
+// (e.g. units that don't track water return an error).
+func (c *Client) fetchUsage(ctx context.Context, d *Device) {
+	if e, typ, err := c.usage(ctx, d, "energyUsage"); err == nil {
+		d.EnergyKWH, d.EnergyType = e, typ
+	} else {
+		c.log.Debug().Err(err).Str("serial", d.SerialNumber).Msg("energy usage poll failed")
+	}
+	if w, _, err := c.usage(ctx, d, "waterUsage"); err == nil {
+		d.WaterGallons = w
+	} else {
+		c.log.Debug().Err(err).Str("serial", d.SerialNumber).Msg("water usage poll failed")
+	}
+}
+
+// usage POSTs a dynamicAction usage report and sums today's buckets. The
+// energy unit ("KWH"/"KBTU") is inferred from the summary message.
+func (c *Client) usage(ctx context.Context, d *Device, usageType string) (total float64, energyType string, err error) {
+	start, end := dayWindow(usageType == "energyUsage")
+	payload := map[string]string{
+		"ACTION":        "waterheaterUsageReportView",
+		"device_name":   d.DeviceID,
+		"serial_number": d.SerialNumber,
+		"start_date":    start,
+		"end_date":      end,
+		"usage_type":    usageType,
+	}
+	var raw json.RawMessage
+	path := "/code/" + clearBladeSystemKey + "/dynamicAction"
+	if err := c.do(ctx, path, c.userToken(), payload, &raw); err != nil {
+		return 0, "", err
+	}
+	var env struct {
+		Success bool   `json:"success"`
+		Error   string `json:"error"`
+		Results struct {
+			Energy usageBlock `json:"energy_usage"`
+			Water  usageBlock `json:"water_usage"`
+		} `json:"results"`
+	}
+	if err := json.Unmarshal(raw, &env); err != nil {
+		return 0, "", fmt.Errorf("parse usage: %w", err)
+	}
+	if !env.Success {
+		if env.Error != "" {
+			return 0, "", fmt.Errorf("usage rejected: %s", env.Error)
+		}
+		return 0, "", fmt.Errorf("usage rejected")
+	}
+	block := env.Results.Water
+	if usageType == "energyUsage" {
+		block = env.Results.Energy
+	}
+	for _, p := range block.Data {
+		total += p.Value
+	}
+	return total, energyTypeFromMessage(block.Message, d.GenericType), nil
+}
+
+type usageBlock struct {
+	Data []struct {
+		Value float64 `json:"value"`
+	} `json:"data"`
+	Message string `json:"message"`
+}
+
+// do POSTs a JSON body to path and decodes the JSON response into out. When
+// token is non-empty it is sent as the ClearBlade-UserToken header.
+func (c *Client) do(ctx context.Context, path, token string, body, out any) error {
+	b, err := json.Marshal(body)
+	if err != nil {
+		return err
+	}
+	req, err := http.NewRequestWithContext(ctx, http.MethodPost, baseURL+path, bytes.NewReader(b))
+	if err != nil {
+		return err
+	}
+	req.Header.Set("Content-Type", "application/json")
+	req.Header.Set("ClearBlade-SystemKey", clearBladeSystemKey)
+	req.Header.Set("ClearBlade-SystemSecret", clearBladeSystemSecret)
+	if token != "" {
+		req.Header.Set("ClearBlade-UserToken", token)
+	}
+	resp, err := c.http.Do(req)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+	raw, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return err
+	}
+	if resp.StatusCode != http.StatusOK {
+		return fmt.Errorf("HTTP %d: %s", resp.StatusCode, bytes.TrimSpace(raw))
+	}
+	return json.Unmarshal(raw, out)
+}
+
+func (c *Client) userToken() string {
+	c.mu.RLock()
+	defer c.mu.RUnlock()
+	return c.token
+}
+
+// --- usage helpers -------------------------------------------------------
+
+// dayWindow returns ISO-8601 start/end strings covering the current local day,
+// matching pyeconet's formats: energy includes the timezone offset, water does
+// not (the upstream parser is picky).
+func dayWindow(energy bool) (start, end string) {
+	now := time.Now()
+	s := time.Date(now.Year(), now.Month(), now.Day(), 0, 0, 0, 999_000_000, now.Location())
+	e := time.Date(now.Year(), now.Month(), now.Day(), 23, 59, 59, 999_000_000, now.Location())
+	if energy {
+		return pyISOMillis(s), pyISOMillis(e)
+	}
+	const f = "2006-01-02T15:04:05.999"
+	return s.Format(f), e.Format(f)
+}
+
+// pyISOMillis emulates Python's datetime.isoformat(timespec='milliseconds')
+// for a tz-aware datetime: YYYY-MM-DDTHH:MM:SS.mmm±HH:MM.
+func pyISOMillis(t time.Time) string {
+	s := t.Format("2006-01-02T15:04:05.000-0700")
+	if len(s) >= 5 { // "-0700" -> "-07:00"
+		s = s[:len(s)-2] + ":" + s[len(s)-2:]
+	}
+	return s
+}
+
+// energyTypeFromMessage extracts the unit label ("KWH"/"KBTU") from Rheem's
+// human summary ("You used X.Y kWh of energy today."), the 4th word per
+// pyeconet's heuristic, falling back to the device's generic type.
+func energyTypeFromMessage(msg, genericType string) string {
+	fields := strings.Fields(msg)
+	if len(fields) >= 4 {
+		return strings.ToUpper(fields[3])
+	}
+	if genericType == "gasWaterHeater" {
+		return "KBTU"
+	}
+	return "KWH"
+}

pkg/econet/econetclient/device.go

@@ -0,0 +1,322 @@
+package econetclient
+
+import (
+	"encoding/json"
+	"strconv"
+	"strings"
+	"time"
+)
+
+// Device is a flat snapshot of one piece of Rheem equipment, decoded from
+// the getUserDataForApp REST response. Fields are computed once per refresh;
+// consumers read them directly. WiFiSignal only arrives over MQTT (which this
+// client does not use), so it stays at its zero value.
+type Device struct {
+	SerialNumber string
+	DeviceID     string
+	FriendlyName string
+	Type         string // water_heater | thermostat | unknown
+	GenericType  string // e.g. heatpumpWaterHeater, gasWaterHeater
+
+	Connected  bool
+	WiFiSignal int // MQTT-only; always 0 here
+	Mode       string
+	Enabled    bool
+
+	Running      bool   // true when actively heating (decoded from @RUNNING over REST)
+	RunningState string // normalized @RUNNING label: "compressor-running" | "element-running" | "idle" | ...
+
+	Setpoint    int
+	SetpointMin int
+	SetpointMax int
+
+	HotWaterAvailability int // -1 if not reported, else 0/33/66/100
+	AlertCount           int
+	Away                 bool
+
+	LastUpdated time.Time
+
+	// Usage totals for the current day, populated by Client.Refresh.
+	EnergyKWH    float64
+	EnergyType   string // "KWH" or "KBTU"
+	WaterGallons float64
+}
+
+// newDevice decodes an equipment block (the raw JSON map for one unit) into
+// a flat Device. It ports the accessor logic from kevinburke/rheemcloud-go
+// so behaviour matches, minus the MQTT-only fields.
+func newDevice(info map[string]json.RawMessage, now time.Time) *Device {
+	d := &Device{
+		DeviceID:             jsonStr(info["device_name"]),
+		SerialNumber:         jsonStr(info["serial_number"]),
+		Type:                 deviceTypeString(jsonStr(info["device_type"])),
+		GenericType:          jsonStr(info["@TYPE"]),
+		Connected:            connected(info),
+		Away:                 jsonBool(info["@AWAY"]),
+		AlertCount:           alertCount(info["@ALERTCOUNT"]),
+		HotWaterAvailability: hotWater(info["@HOTWATER"]),
+		Enabled:              enabled(info),
+		Mode:                 mode(info),
+		LastUpdated:          now,
+	}
+	d.FriendlyName = friendlyName(info, d.DeviceID)
+	d.Setpoint, d.SetpointMin, d.SetpointMax = setpoint(info["@SETPOINT"])
+	d.Running, d.RunningState = running(info)
+	return d
+}
+
+// --- field decoders ------------------------------------------------------
+
+func connected(info map[string]json.RawMessage) bool {
+	v, ok := info["@CONNECTED"]
+	if !ok {
+		return true // older units omit it and are assumed connected
+	}
+	return jsonBool(v)
+}
+
+func friendlyName(info map[string]json.RawMessage, deviceID string) string {
+	if obj := decodeDatapoint(info["@NAME"]); obj != nil {
+		if s := jsonStr(obj.Value); s != "" {
+			return s
+		}
+	}
+	return deviceID
+}
+
+func alertCount(v json.RawMessage) int {
+	if len(v) == 0 {
+		return 0
+	}
+	var n float64
+	if json.Unmarshal(v, &n) == nil {
+		return int(n)
+	}
+	var s string
+	if json.Unmarshal(v, &s) == nil {
+		if i, err := strconv.Atoi(s); err == nil {
+			return i
+		}
+	}
+	return 0
+}
+
+func hotWater(v json.RawMessage) int {
+	var icon string
+	if len(v) == 0 || json.Unmarshal(v, &icon) != nil {
+		return -1
+	}
+	switch {
+	case strings.Contains(icon, "ic_tank_hundread_percent"):
+		return 100
+	case strings.Contains(icon, "ic_tank_fourty_percent"):
+		return 66
+	case strings.Contains(icon, "ic_tank_ten_percent"):
+		return 33
+	case strings.Contains(icon, "ic_tank_empty"), strings.Contains(icon, "ic_tank_zero_percent"):
+		return 0
+	default:
+		return -1
+	}
+}
+
+func setpoint(v json.RawMessage) (val, min, max int) {
+	obj := decodeDatapoint(v)
+	if obj == nil {
+		return 0, 0, 0
+	}
+	var n float64
+	_ = json.Unmarshal(obj.Value, &n)
+	return int(n), int(obj.Constraints.LowerLimit), int(obj.Constraints.UpperLimit)
+}
+
+// enabled reports the master on/off state, porting rheemcloud's Device.Enabled.
+func enabled(info map[string]json.RawMessage) bool {
+	if _, ok := info["@MODE"]; ok {
+		labels := modeLabels(info)
+		if obj := decodeDatapoint(info["@MODE"]); obj != nil {
+			if idx, ok := datapointIndex(obj); ok && idx >= 0 && idx < len(labels) {
+				return !strings.EqualFold(labels[idx], "OFF")
+			}
+		}
+	}
+	if _, ok := info["@ENABLED"]; ok {
+		obj := decodeDatapoint(info["@ENABLED"])
+		if obj == nil {
+			return false
+		}
+		idx, _ := datapointIndex(obj)
+		return idx == 1
+	}
+	return false
+}
+
+// mode returns the current operating-mode label, porting rheemcloud's Device.Mode.
+func mode(info map[string]json.RawMessage) string {
+	_, supportsModes := info["@MODE"]
+	_, supportsOnOff := info["@ENABLED"]
+	if supportsOnOff && !enabled(info) {
+		return "off"
+	}
+	if !supportsModes {
+		switch jsonStr(info["@TYPE"]) {
+		case "gasWaterHeater", "tanklessWaterHeater":
+			return "gas"
+		default:
+			return "electric"
+		}
+	}
+	labels := modeLabels(info)
+	obj := decodeDatapoint(info["@MODE"])
+	if obj == nil {
+		return "unknown"
+	}
+	idx, _ := datapointIndex(obj)
+	if idx < 0 || idx >= len(labels) {
+		return "unknown"
+	}
+	return modeFromEnumText(labels[idx])
+}
+
+func modeLabels(info map[string]json.RawMessage) []string {
+	obj := decodeDatapoint(info["@MODE"])
+	if obj == nil {
+		return nil
+	}
+	return obj.Constraints.EnumText
+}
+
+// modeFromEnumText normalizes a Rheem mode label into a stable slug,
+// matching pyeconet's WaterHeaterOperationMode labels.
+func modeFromEnumText(s string) string {
+	cleaned := strings.ToUpper(strings.ReplaceAll(strings.ReplaceAll(strings.TrimRight(s, " "), " ", "_"), "/", "_"))
+	switch cleaned {
+	case "OFF":
+		return "off"
+	case "ELECTRIC", "ELECTRIC_MODE":
+		return "electric"
+	case "ENERGY_SAVING", "ENERGY_SAVER":
+		return "energy-saving"
+	case "HEAT_PUMP", "HEAT_PUMP_ONLY":
+		return "heat-pump"
+	case "HIGH_DEMAND":
+		return "high-demand"
+	case "GAS":
+		return "gas"
+	case "PERFORMANCE":
+		return "performance"
+	case "VACATION":
+		return "vacation"
+	default:
+		return "unknown"
+	}
+}
+
+// KnownModes are the normalized operating-mode slugs modeFromEnumText emits.
+// Consumers (e.g. the mode enum gauge) iterate these so every mode gets a
+// series regardless of which one is currently active.
+var KnownModes = []string{
+	"off", "electric", "energy-saving", "heat-pump",
+	"high-demand", "gas", "performance", "vacation", "unknown",
+}
+
+// running reports whether the unit is actively heating and a normalized label
+// for what is running. It reads the @RUNNING datapoint, a bare string the REST
+// getUserDataForApp payload populates (e.g. "Compressor Running" -> true,
+// "compressor-running"); empty means idle. This is served over plain REST
+// despite older code assuming it was MQTT-only.
+func running(info map[string]json.RawMessage) (active bool, state string) {
+	raw := strings.TrimSpace(jsonStr(info["@RUNNING"]))
+	if raw == "" {
+		return false, "idle"
+	}
+	state = slugify(raw)
+	if state == "off" || state == "idle" {
+		return false, state
+	}
+	return true, state
+}
+
+// slugify normalizes a Rheem label into a stable lowercase kebab-case slug,
+// e.g. "Compressor Running" -> "compressor-running".
+func slugify(s string) string {
+	s = strings.ToLower(strings.TrimSpace(s))
+	s = strings.ReplaceAll(s, "/", "-")
+	s = strings.Join(strings.Fields(s), "-")
+	return s
+}
+
+func deviceTypeString(s string) string {
+	switch s {
+	case "WH":
+		return "water_heater"
+	case "HVAC":
+		return "thermostat"
+	default:
+		return "unknown"
+	}
+}
+
+// --- datapoint plumbing --------------------------------------------------
+
+// datapointObject is the {value, status, title, constraints} shape many
+// "@..." fields use. Some fields are bare scalars instead; decodeDatapoint
+// returns nil for those and callers fall back to reading the raw value.
+type datapointObject struct {
+	Value       json.RawMessage      `json:"value"`
+	Status      string               `json:"status"`
+	Title       string               `json:"title"`
+	Constraints datapointConstraints `json:"constraints"`
+}
+
+type datapointConstraints struct {
+	LowerLimit float64  `json:"lowerLimit"`
+	UpperLimit float64  `json:"upperLimit"`
+	EnumText   []string `json:"enumText"`
+}
+
+func decodeDatapoint(b json.RawMessage) *datapointObject {
+	if len(b) == 0 || !isJSONObject(b) {
+		return nil
+	}
+	var obj datapointObject
+	if json.Unmarshal(b, &obj) != nil {
+		return nil
+	}
+	return &obj
+}
+
+// datapointIndex reads a datapoint's numeric value (mode index / enabled flag).
+func datapointIndex(obj *datapointObject) (int, bool) {
+	var n float64
+	if json.Unmarshal(obj.Value, &n) != nil {
+		return 0, false
+	}
+	return int(n), true
+}
+
+func isJSONObject(b json.RawMessage) bool {
+	for _, c := range b {
+		switch c {
+		case ' ', '\t', '\n', '\r':
+			continue
+		case '{':
+			return true
+		default:
+			return false
+		}
+	}
+	return false
+}
+
+func jsonStr(v json.RawMessage) string {
+	var s string
+	_ = json.Unmarshal(v, &s)
+	return s
+}
+
+func jsonBool(v json.RawMessage) bool {
+	var b bool
+	_ = json.Unmarshal(v, &b)
+	return b
+}

pkg/econet/econetgrpc/device.go

@@ -1,32 +1,31 @@
 package econetgrpc
 
 import (
-	rheemcloud "github.com/kevinburke/rheemcloud-go"
 	"google.golang.org/protobuf/types/known/timestamppb"
 
 	pb "gitea.libretechconsulting.com/rmcguire/econet-exporter/api/econet/v1alpha1"
+	"gitea.libretechconsulting.com/rmcguire/econet-exporter/pkg/econet/econetclient"
 )
 
-func deviceToProto(d *rheemcloud.Device) *pb.Device {
-	min, max := d.SetpointLimits()
+func deviceToProto(d *econetclient.Device) *pb.Device {
 	return &pb.Device{
-		SerialNumber:         d.SerialNumber(),
-		DeviceId:             d.DeviceID(),
-		FriendlyName:         d.FriendlyName(),
-		Type:                 d.Type().String(),
-		GenericType:          d.GenericType(),
-		Connected:            d.Connected(),
-		WifiSignal:           int32(d.WiFiSignal()),
-		Mode:                 d.Mode().String(),
-		Enabled:              d.Enabled(),
-		Running:              d.Running(),
-		RunningState:         d.RunningState(),
-		Setpoint:             int32(d.Setpoint()),
-		SetpointMin:          int32(min),
-		SetpointMax:          int32(max),
-		HotWaterAvailability: int32(d.HotWaterAvailability()),
-		AlertCount:           int32(d.AlertCount()),
-		Away:                 d.Away(),
+		SerialNumber:         d.SerialNumber,
+		DeviceId:             d.DeviceID,
+		FriendlyName:         d.FriendlyName,
+		Type:                 d.Type,
+		GenericType:          d.GenericType,
+		Connected:            d.Connected,
+		WifiSignal:           int32(d.WiFiSignal),
+		Mode:                 d.Mode,
+		Enabled:              d.Enabled,
+		Running:              d.Running,
+		RunningState:         d.RunningState,
+		Setpoint:             int32(d.Setpoint),
+		SetpointMin:          int32(d.SetpointMin),
+		SetpointMax:          int32(d.SetpointMax),
+		HotWaterAvailability: int32(d.HotWaterAvailability),
+		AlertCount:           int32(d.AlertCount),
+		Away:                 d.Away,
 		LastUpdated:          timestamppb.New(d.LastUpdated),
 	}
 }

pkg/econet/econetgrpc/econet.go

@@ -1,11 +1,10 @@
 // Package econetgrpc implements the EconetService gRPC API over a shared
-// rheemcloud.Client, exposing read-only device state.
+// econetclient.Client, exposing read-only device state.
 package econetgrpc
 
 import (
 	"context"
 
-	rheemcloud "github.com/kevinburke/rheemcloud-go"
 	"go.opentelemetry.io/otel/attribute"
 	"go.opentelemetry.io/otel/codes"
 	"go.opentelemetry.io/otel/trace"
@@ -16,17 +15,18 @@ import (
 
 	pb "gitea.libretechconsulting.com/rmcguire/econet-exporter/api/econet/v1alpha1"
 	"gitea.libretechconsulting.com/rmcguire/econet-exporter/pkg/config"
+	"gitea.libretechconsulting.com/rmcguire/econet-exporter/pkg/econet/econetclient"
 )
 
 type EconetGRPCServer struct {
 	tracer trace.Tracer
 	ctx    context.Context
 	cfg    *config.ServiceConfig
-	client *rheemcloud.Client
+	client *econetclient.Client
 	pb.UnimplementedEconetServiceServer
 }
 
-func NewEconetGRPCServer(ctx context.Context, cfg *config.ServiceConfig, client *rheemcloud.Client) *EconetGRPCServer {
+func NewEconetGRPCServer(ctx context.Context, cfg *config.ServiceConfig, client *econetclient.Client) *EconetGRPCServer {
 	return &EconetGRPCServer{
 		ctx:    ctx,
 		cfg:    cfg,

pkg/econet/econetmetrics/gauges.go

@@ -3,9 +3,10 @@ package econetmetrics
 import (
 	"context"
 
-	rheemcloud "github.com/kevinburke/rheemcloud-go"
 	"go.opentelemetry.io/otel/attribute"
 	"go.opentelemetry.io/otel/metric"
+
+	"gitea.libretechconsulting.com/rmcguire/econet-exporter/pkg/econet/econetclient"
 )
 
 // registerLive wires the per-device live-state gauges to a single callback
@@ -17,13 +18,14 @@ func (c *Collector) registerLive() error {
 		setpointMin: b.i64("econet_setpoint_min_fahrenheit", "Minimum allowed setpoint (°F)"),
 		setpointMax: b.i64("econet_setpoint_max_fahrenheit", "Maximum allowed setpoint (°F)"),
 		connected:   b.i64("econet_connected", "1 if the device is connected"),
-		running:     b.i64("econet_running", "1 if the device is actively heating"),
+		running:     b.i64("econet_running", "1 if the device is actively heating (running_state label names the stage, e.g. compressor-running)"),
+		mode:        b.i64("econet_mode", "Operating mode enum: 1 for the current mode, 0 otherwise (see the mode label)"),
 		enabled:     b.i64("econet_enabled", "1 if the device is enabled"),
 		away:        b.i64("econet_away", "1 if away mode is on"),
 		hotWater:    b.i64("econet_hot_water_availability_percent", "Hot water availability (%)"),
 		alerts:      b.i64("econet_alert_count", "Number of active alerts"),
 		wifi:        b.i64("econet_wifi_signal_db", "WiFi signal strength (dB)"),
-		lastUpdated: b.i64("econet_last_updated_seconds", "Unix time of last MQTT state update"),
+		lastUpdated: b.i64("econet_last_updated_seconds", "Unix time of last state update"),
 		info:        b.i64("econet_device_info", "Device metadata (value is always 1)"),
 	}
 	if b.err != nil {
@@ -38,8 +40,8 @@ func (c *Collector) registerLive() error {
 	return err
 }
 
-// registerUsage wires the polled energy/water gauges, reading the cache the
-// poller refreshes (the underlying REST calls are too slow for a callback).
+// registerUsage wires the energy/water gauges, reading the usage totals the
+// poller folds into each device snapshot.
 func (c *Collector) registerUsage() error {
 	b := &gaugeBuilder{m: c.meter}
 	g := &usageGauges{
@@ -51,10 +53,8 @@ func (c *Collector) registerUsage() error {
 		return b.err
 	}
 	_, err := c.meter.RegisterCallback(func(_ context.Context, o metric.Observer) error {
-		c.mu.RLock()
-		defer c.mu.RUnlock()
-		for serial, u := range c.usage {
-			g.observe(o, serial, u, c.cfg.CostPerKWH)
+		for _, d := range c.client.Devices() {
+			g.observe(o, d, c.client.CostPerKWH())
 		}
 		return nil
 	}, b.obs...)
@@ -65,27 +65,30 @@ type liveGauges struct {
 	setpoint, setpointMin, setpointMax  metric.Int64ObservableGauge
 	connected, running, enabled, away   metric.Int64ObservableGauge
 	hotWater, alerts, wifi, lastUpdated metric.Int64ObservableGauge
+	mode                                metric.Int64ObservableGauge
 	info                                metric.Int64ObservableGauge
 }
 
-func (g *liveGauges) observe(o metric.Observer, d *rheemcloud.Device) {
+func (g *liveGauges) observe(o metric.Observer, d *econetclient.Device) {
 	set := metric.WithAttributes(deviceAttrs(d)...)
-	min, max := d.SetpointLimits()
-	o.ObserveInt64(g.setpoint, int64(d.Setpoint()), set)
-	o.ObserveInt64(g.setpointMin, int64(min), set)
-	o.ObserveInt64(g.setpointMax, int64(max), set)
-	o.ObserveInt64(g.connected, b2i(d.Connected()), set)
-	o.ObserveInt64(g.running, b2i(d.Running()), set)
-	o.ObserveInt64(g.enabled, b2i(d.Enabled()), set)
-	o.ObserveInt64(g.away, b2i(d.Away()), set)
-	o.ObserveInt64(g.hotWater, int64(d.HotWaterAvailability()), set)
-	o.ObserveInt64(g.alerts, int64(d.AlertCount()), set)
-	o.ObserveInt64(g.wifi, int64(d.WiFiSignal()), set)
-	// LastUpdated is zero until the first MQTT update lands; skip it then
-	// rather than emit a nonsensical negative epoch.
+	o.ObserveInt64(g.setpoint, int64(d.Setpoint), set)
+	o.ObserveInt64(g.setpointMin, int64(d.SetpointMin), set)
+	o.ObserveInt64(g.setpointMax, int64(d.SetpointMax), set)
+	o.ObserveInt64(g.connected, b2i(d.Connected), set)
+	runSet := metric.WithAttributes(append(deviceAttrs(d), attribute.String("econet.running_state", d.RunningState))...)
+	o.ObserveInt64(g.running, b2i(d.Running), runSet)
+	o.ObserveInt64(g.enabled, b2i(d.Enabled), set)
+	o.ObserveInt64(g.away, b2i(d.Away), set)
+	o.ObserveInt64(g.hotWater, int64(d.HotWaterAvailability), set)
+	o.ObserveInt64(g.alerts, int64(d.AlertCount), set)
+	o.ObserveInt64(g.wifi, int64(d.WiFiSignal), set)
 	if !d.LastUpdated.IsZero() {
 		o.ObserveInt64(g.lastUpdated, d.LastUpdated.Unix(), set)
 	}
+	for _, m := range econetclient.KnownModes {
+		modeSet := metric.WithAttributes(append(deviceAttrs(d), attribute.String("econet.mode", m))...)
+		o.ObserveInt64(g.mode, b2i(m == d.Mode), modeSet)
+	}
 	o.ObserveInt64(g.info, 1, metric.WithAttributes(infoAttrs(d)...))
 }
 
@@ -93,34 +96,34 @@ type usageGauges struct {
 	energy, cost, water metric.Float64ObservableGauge
 }
 
-func (g *usageGauges) observe(o metric.Observer, serial string, u usage, costPerKWH float64) {
-	set := metric.WithAttributes(attribute.String("econet.serial", serial))
-	o.ObserveFloat64(g.energy, u.energyKWH, metric.WithAttributes(
-		attribute.String("econet.serial", serial),
-		attribute.String("econet.energy_type", u.energyType),
+func (g *usageGauges) observe(o metric.Observer, d *econetclient.Device, costPerKWH float64) {
+	serial := attribute.String("econet.serial", d.SerialNumber)
+	o.ObserveFloat64(g.energy, d.EnergyKWH, metric.WithAttributes(
+		serial,
+		attribute.String("econet.energy_type", d.EnergyType),
 	))
-	o.ObserveFloat64(g.water, u.waterGallons, set)
-	if u.energyType == "KWH" {
-		o.ObserveFloat64(g.cost, u.energyKWH*costPerKWH, set)
+	o.ObserveFloat64(g.water, d.WaterGallons, metric.WithAttributes(serial))
+	if d.EnergyType == "KWH" {
+		o.ObserveFloat64(g.cost, d.EnergyKWH*costPerKWH, metric.WithAttributes(serial))
 	}
 }
 
 // deviceAttrs are low-cardinality identity attributes safe for every series.
 // They follow OTEL semantic-convention style (namespaced, dotted keys) and
 // deliberately exclude anything that changes over time (e.g. timestamps).
-func deviceAttrs(d *rheemcloud.Device) []attribute.KeyValue {
+func deviceAttrs(d *econetclient.Device) []attribute.KeyValue {
 	return []attribute.KeyValue{
-		attribute.String("econet.serial", d.SerialNumber()),
-		attribute.String("econet.device_id", d.DeviceID()),
-		attribute.String("econet.friendly_name", d.FriendlyName()),
+		attribute.String("econet.serial", d.SerialNumber),
+		attribute.String("econet.device_id", d.DeviceID),
+		attribute.String("econet.friendly_name", d.FriendlyName),
 	}
 }
 
-func infoAttrs(d *rheemcloud.Device) []attribute.KeyValue {
+func infoAttrs(d *econetclient.Device) []attribute.KeyValue {
 	return append(deviceAttrs(d),
-		attribute.String("econet.type", d.Type().String()),
-		attribute.String("econet.generic_type", d.GenericType()),
-		attribute.String("econet.mode", d.Mode().String()),
+		attribute.String("econet.type", d.Type),
+		attribute.String("econet.generic_type", d.GenericType),
+		attribute.String("econet.mode", d.Mode),
 	)
 }
 

pkg/econet/econetmetrics/metrics.go

@@ -1,123 +1,44 @@
 // Package econetmetrics registers OTEL observable gauges for Rheem EcoNet
-// device state and periodically polls energy/water usage history so the
-// values are available at Prometheus scrape time.
+// device state. Values are read at scrape time from the econetclient snapshot,
+// which a background poller keeps fresh over REST.
 package econetmetrics
 
 import (
 	"context"
-	"sync"
-	"time"
 
-	rheemcloud "github.com/kevinburke/rheemcloud-go"
 	"github.com/rs/zerolog"
 	"go.opentelemetry.io/otel/metric"
 
 	"gitea.libretechconsulting.com/rmcguire/go-app/pkg/otel"
 
 	"gitea.libretechconsulting.com/rmcguire/econet-exporter/pkg/config"
+	"gitea.libretechconsulting.com/rmcguire/econet-exporter/pkg/econet/econetclient"
 )
 
-// usage holds the most recent polled energy/water totals for a device.
-type usage struct {
-	energyKWH    float64
-	energyType   string
-	waterGallons float64
-}
-
 type Collector struct {
 	ctx    context.Context
 	cfg    *config.ServiceConfig
 	log    *zerolog.Logger
-	client *rheemcloud.Client
+	client *econetclient.Client
 	meter  metric.Meter
-
-	mu    sync.RWMutex
-	usage map[string]usage // keyed by serial number
-
-	stop chan struct{}
 }
 
-func NewCollector(ctx context.Context, cfg *config.ServiceConfig, client *rheemcloud.Client) *Collector {
+func NewCollector(ctx context.Context, cfg *config.ServiceConfig, client *econetclient.Client) *Collector {
 	return &Collector{
 		ctx:    ctx,
 		cfg:    cfg,
 		log:    zerolog.Ctx(ctx),
 		client: client,
 		meter:  otel.GetMeter(ctx, "econet"),
-		usage:  make(map[string]usage),
-		stop:   make(chan struct{}),
 	}
 }
 
-// Start registers the gauge callbacks and launches the usage poller and
-// event drain goroutines. The rheemcloud client keeps live state fresh over
-// MQTT; draining its event channel keeps the cap-64 buffer from filling.
-func (c *Collector) Start() error {
+// RegisterGauges registers the observable gauge callbacks. It is safe to call
+// before the first refresh: the callbacks observe nothing while no devices are
+// loaded, so /metrics comes up immediately.
+func (c *Collector) RegisterGauges() error {
 	if err := c.registerLive(); err != nil {
 		return err
 	}
-	if err := c.registerUsage(); err != nil {
-		return err
-	}
-	go c.drainEvents()
-	go c.pollUsage()
-	return nil
-}
-
-func (c *Collector) Stop() { close(c.stop) }
-
-func (c *Collector) drainEvents() {
-	events := c.client.Subscribe()
-	for {
-		select {
-		case <-c.stop:
-			return
-		case <-c.ctx.Done():
-			return
-		case ev, ok := <-events:
-			if !ok {
-				return
-			}
-			c.log.Debug().Str("event", ev.Kind.String()).Msg("econet event")
-		}
-	}
-}
-
-func (c *Collector) pollUsage() {
-	c.refreshUsage()
-	t := time.NewTicker(c.cfg.GetUsageInterval())
-	defer t.Stop()
-	for {
-		select {
-		case <-c.stop:
-			return
-		case <-c.ctx.Done():
-			return
-		case <-t.C:
-			c.refreshUsage()
-		}
-	}
-}
-
-// refreshUsage polls each device's energy/water usage for the current day
-// and caches the totals for the usage gauge callback to read.
-func (c *Collector) refreshUsage() {
-	now := time.Now()
-	start := time.Date(now.Year(), now.Month(), now.Day(), 0, 0, 0, 0, now.Location())
-	for serial, d := range c.client.Devices() {
-		u := usage{}
-		if e, err := c.client.EnergyUsage(c.ctx, d, start, now); err == nil {
-			u.energyKWH, u.energyType = e.Total, e.EnergyType
-		} else {
-			c.log.Debug().Err(err).Str("serial", serial).Msg("energy usage poll failed")
-		}
-		if w, err := c.client.WaterUsage(c.ctx, d, start, now); err == nil {
-			u.waterGallons = w.Total
-		} else {
-			c.log.Debug().Err(err).Str("serial", serial).Msg("water usage poll failed")
-		}
-		c.mu.Lock()
-		c.usage[serial] = u
-		c.mu.Unlock()
-	}
+	return c.registerUsage()
 }